<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login</title>
</head>
<body>

  <form method="post" action="/webapp_book/login">
    Username：<input type="text" name="username"/><br>
    Password：<input type="password" name="password"/><br>
    十天免登录：<input type="checkbox" name="ff" value="1" /><br>
    <input type="submit" value="Login"/>
  </form>

</body>
</html>